Volume 18 (2012): Issue 2 (December 2012)

This case report discusses the previously unreported situation of a suicidal death, with injuries to the chest, by means of an electric circular saw. A review of the English and German literature provides an overview of common sites of injury, gender and psychiatric status in power saw related deaths.

The present study is the first attempt to explore the rate, characteristics and legal reactions to neonaticide in Norway during the years 1990 – 2009. Potential incidents of neonaticide were identified through the national homicide index held by the National Criminal Investigation Service and the national police registers for all recorded crime in Norway held by the National Police Computing and Material Services. The study uncovers that no clear incident of neonaticide has been recorded in the respective registers during the study’s time period. There was however recorded one case of a discarded stillborn and one case of an abandoned neonate that died through exposure. The paper discusses whether the study’s findings are congruent with an evolutionary psychological understanding of filicide and current knowledge of risk factors and rates for neonaticide.

Background: Stab wounds are common in homicide cases. Post-mortem multislice computed tomography (PMCT) has proved to be a useful tool in forensic examinations of victims of sharp force trauma, but due the limited resolution of soft tissues, the radiological depiction of a stab channel is difficult. In this study, we have tried to obtain information about the shape of a knife blade by CT scanning contrast-filled experimentally inflicted stab wounds in various types of pig tissue.

Methodology: The tissue samples were mounted on floral foam (oasis) with wooden sticks. Two contrast media were used: one was unmodified and easy flowing, and one was made more viscous with polyethylene glycol. Stab channels in ballistic soap were used for comparison. India ink-filled stab channels were investigated histologically to determine the pattern of leakage.

Principal findings: We found that the shape of the stab wounds on the CT images from lung and muscle tissue did not correspond well to the shape of the inflicting knife. There was a better correspondence in the images obtained from liver, spleen and kidney. The viscous contrast medium was less likely than the thin (easy flowing) contrast medium to spill into to structures outside the stab channel, but some spillage was observed for both types of contrast medium. Air bubbles were only observed in the viscous contrast medium.

Conclusion: Radiological evaluation of a contrast-filled stab wound in isolated tissue blocks did not permit the positive identification of the inflicting weapon, but it was, in tissue blocks from liver, spleen and kidney, possible to obtain a rough idea of the shape of the inflicting knife and to differentiate a knife from a screwdriver.